1.\" Copyright (c) 1990, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)basename.1 8.2 (Berkeley) 4/18/94 36.\" 37.Dd April 18, 1994 38.Dt BASENAME 1 39.Os 40.Sh NAME 41.Nm basename , dirname 42.Nd return filename or directory portion of pathname 43.Sh SYNOPSIS 44.Nm basename 45.Ar string 46.Op Ar suffix 47.Nm dirname 48.Ar string 49.Sh DESCRIPTION 50.Nm Basename 51deletes any prefix ending with the last slash 52.Ql \&/ 53character present in 54.Ar string , 55and a 56.Ar suffix , 57if given. 58The resulting filename is written to the standard output. 59If 60.Ar string 61ends in the slash character, 62.Ql / , 63or is the same as the 64.Ar suffix 65argument, 66a newline is output. 67A non-existent suffix is ignored. 68.Pp 69.Nm Dirname 70deletes the filename portion, beginning 71with the last slash 72.Ql \&/ 73character to the end of 74.Ar string , 75and writes the result to the standard output. 76.Sh EXAMPLES 77The following line sets the shell variable 78.Ev FOO 79to 80.Pa /usr/bin . 81.Pp 82.Dl FOO=`dirname /usr/bin/trail` 83.Pp 84Both the 85.Nm basename 86and 87.Nm dirname 88exit 0 on success, and >0 if an error occurs. 89.Sh SEE ALSO 90.Xr csh 1 91.Xr sh 1 92.Sh STANDARDS 93The 94.Nm basename 95and 96.Nm dirname 97functions are expected to be POSIX 1003.2 compatible. 98